List of National Natural Landmarks in Arkansas
From List of National Natural Landmarks, these are the National Natural Landmarks in Arkansas. There are 5 in total, 4 are forests, 1 is other (spring).
| Name | Image | Date | Location | County | Ownership | Description | |
|---|---|---|---|---|---|---|---|
| 1 | Big Lake Natural Area | 1974 | Mississippi | federal | Forest area within Big Lake National Wildlife Refuge.[1] | ||
| 2 | Lake Winona Research Natural Area | 1976 | Saline | federal | Pine forest near Lake Winona, water supply lake on Alum Fork of Saline River. Part of Ouachita National Forest. [2][3] | ||
| 3 | Mammoth Spring | .JPG)
|
June 1972 | Mammoth Spring 36°29′52″N 91°32′09″W / 36.4978°N 91.5359°W | Fulton | state | The largest first magnitude spring in Arkansas, it is connected underground to another Natural Landmark, the Grand Gulf State Park in Missouri. It is protected as a state park. |
| 4 | Roaring Branch Research Natural Area | 1976 | Polk | federal | Steep ravine with a virgin forest in Ouachita National Forest. [4] | ||
| 5 | White River Sugarberry Natural Area | 1974 | Desha | federal | Virgin hardwood bottomland forest in White River National Wildlife Refuge. [5] |